1N4681 TR TIN/LEAD

Overview

The Central Semiconductor Corp 1N4681 TR TIN/LEAD is a silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 2.7 V with a 5% tolerance and operates within a temperature range of -65 °C to +200 °C. The device has a power dissipation rating of 250 mW, a maximum reverse leakage current of 1 µA, and a Zener impedance of 1.5 kΩ at a test current of 250 µA. Packaged in a DO-35 glass axial leaded format, it is supplied in bulk quantities.

Feature Summary

• Utilizes hermetically sealed glass construction for environmental protection
• Capable of operation at elevated temperatures up to 200 °C
• Provides stable low-voltage reference characteristics

Applications

• Voltage regulation circuits
• Reference voltage sources
• Overvoltage protection

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm tin/lead plating specifications. Ensure the procurement channel provides original manufacturer data sheets confirming the 250 mW power rating and 2.7 V Zener voltage parameters. Confirm that the package type matches the required DO-35 form factor for your assembly process.

Selection Notes

Select this component when a low-cost, high-temperature silicon Zener diode is required for general-purpose regulation. The 250 mW power rating suits low-current applications where higher power devices are unnecessary. Verify that the 1.5 kΩ impedance meets the noise and stability requirements of the target circuit design.

Part Context

This part belongs to the standard 1N4681 series of small-signal Zener diodes manufactured by Central Semiconductor. These components are widely used in consumer electronics and industrial equipment for basic voltage clamping and reference tasks. The tin/lead finish indicates compliance with legacy or specific non-rohs manufacturing standards.

Replacement Considerations

Publicly confirmed substitute part numbers were not identified in the provided source material.